CN1989058A - Can creel for the loop-type, circular offset deposit of textile fibre bands in cans - Google Patents

Abstract

The invention relates to can creels of spinning preparation machines, such as stretching and combing machines, wherein the fibre bands are placed in adjacent loops in cans (18) by rotating filing plates (2). Said can creels are axially offset (24) between the rotational axis of filing plates and cans which can be adjusted according to the properties of the fibre band. Said axial offset is a difficult and long procedure. In order to simplify said offset, adjustment takes place by means of an adjusting motor (23) which can be controlled by hand. Preferably, a sensor device (41 to 44), which automatically carries out said adjustment, is provided and the presence of a band packet is taken into account which prevents quality-reducing out-spinning of fibre bands by the can rim.

Description

Coiler for depositing textile fiber strips in a coiled, circularly offset manner in cans

The invention relates to a coiler for placing coils of textile fiber sliver in a circularly offset manner in a can, which has a revolving laying disc for laying the fiber sliver in coils in a rotating can, or for laying it on a stationary In the cans of the cans, there is a placement disc supported eccentrically in a rotating disc with a relatively large diameter, wherein the axes of rotation of the placement disc and the cans or the rotating disc are offset parallel to each other.

This coiler is installed on pile machines, drawing machines, cards and similar equipment. They are usually combined in a device so they are not considered separate working machines.

In order to achieve optimal filling of the can while utilizing its volume to the greatest extent, the fiber sliver is placed in the can in circularly offset coils. Stationary, rotatably mounted storage trays are used for this purpose, which are arranged parallel to and offset from the axis above the likewise rotating cans. However, this storage can also be realized in that the rotating storage tray is mounted off-centre in a likewise rotating carousel, which is itself arranged centrally above the stationary can. Said positioning can take place with a coil which does not protrude beyond the central axis of the can or does not protrude beyond this can.

The axial misalignment between the tray and the can can usually be adjusted so that, on the one hand, it can be stored up to the can wall and, on the other hand, frictional contact of the fiber strands against the can wall is avoided. The correct axial misalignment also depends on the sliver weight per unit length, the fiber type, the bulkiness of the sliver and other influencing parameters, so it is often necessary to adjust the axial misalignment. But when the rotating can enters the bottom, the adjustment of axis misalignment is mostly loaded down with trivial details and difficult. If empirical values do not exist, suitable axis misalignment can only be obtained experimentally.

It is therefore the object of the invention to realize such an adjustment of the axis misalignment conveniently, simply and optionally automatically. This object is achieved by the features stated in the characterizing parts of the two independent claims. According to claim 1, an axial offset adjustment between the depositing pan and the rotating can can is achieved, wherein the depositing pan or the can or both are displaceable. According to claim 2, the adjustment of the axis misalignment is achieved by offsetting the placement disk inside the received rotating disk.

In this way, the axis misalignment can be adjusted very conveniently and comfortably, and if necessary, can be adjusted. The feed device can be formed by a screw or also by a cam.

Modern cans have fiber sliver discs which are lifted up to the upper edge of the can by means of coil springs. This enables the coils formed by the depositing disk to be placed initially on the fiber strand disk provided with the clamping tongue and then placed on the formed fiber strand bundle. In this way, it is prevented that the fiber strips are thrown out beyond the defined laying radius. However, the springs of the fiber sliver discs sometimes relax, so that the intended function is lost. The fiber sliver can be thrown beyond the edge of the can, drawn into the can during the formation of the fiber sliver bundle, and damaged when it is drawn out of the can later. Sensitive carding slivers are particularly dangerous here.

Here, the invention can be used to reduce the axis misalignment up to the formation of a sliver bundle, whereby the ejected sliver coils also remain within a defined placement radius. During the formation of fiber strand bales, the axial offset for optimal utilization of the available can volume can be increased to a defined degree. For this purpose, a sensor device can be provided which detects this and carries out the switchover automatically.

As far as the space permits, the adjustment of the axis misalignment can be effected by means of manual adjustment, for example in the form of a screw, a toothed rack or the like. However, it is preferred to have an electric or hydraulic actuating motor, for example in the form of a piston/cylinder unit. Such a servomotor can be controlled manually, but it can also be controlled automatically, for example when the servomotor is specified to try to compensate for errors in the sliver bundle.

Exemplary embodiments of the invention are shown in the drawings. In the attached picture:

Figure 1 shows a side view with a rotatable can and a rotatable placement tray;

Figure 2 shows a cross-sectional view of plane A-A in Figure 1;

Figure 3 shows a cross-sectional view of plane B-B in Figure 1 on an enlarged scale;

Figure 4 shows a top view of a placement tray supported in a revolving rotating tray;

Figure 5 shows a cross-sectional view of the subject matter of Figure 4;

Figure 6 shows a sensing device for detecting bundles of fiber slivers.

As can be seen from FIGS. 1 and 2 , a storage tray 2 is mounted rotatably about an axis 3 in the platform 1 of a device, for example a carding machine. It has a slanted fiber sliver channel 4 , through which the fiber sliver (not shown here) from a supply roll 5 is guided through an inlet opening 6 to an off-centre placement opening 7 . The placement disc 2 is driven by a drive disc 9 via a belt 8 , which is located on an erected shaft 10 .

This shaft 10 originates from a transmission 11 driven by an electric motor 12 . The transmission 11 also drives a shaft 13 which, via a pulley 14 and a belt 15 , rotates a can drum 16 about an axis 17 . A can 18 is erected on this can disk.

The drive speed of the shaft 10 or 13 is selected by means of the transmission 11 in such a way that the depositing disk 2 performs multiple rotations of the can disk 16 , so that the fiber sliver coils formed by the depositing disk 2 are laid side by side in the can 18 .

As can be seen from FIG. 3 , the can drum 16 is mounted via journals 19 in a slide 20 , which can be moved on two stationary slide rails 21 . A servomotor 22 is used for the movement of the slide rail, which servomotor acts on the slide 20 via a screw 23 .

The servomotor 22 can be switched on in its two directions of rotation by means of two pushbuttons, whereby the servomotor can move the slide 20 and, via it, the can 18 and thus the can can relative to the placement tray 2 The axis misalignment 24 changes. As a result, the axis offset can be adjusted quickly and comfortably when changes are required. This often leads to adaptation of the axis misalignment to these situations, where this does not stop prematurely. Obviously, the axial misalignment can also be changed by moving the storage tray 2 relative to the can 18 .

In the embodiment of FIGS. 4 and 5 , the placement tray 2 , driven by means of its belt 6 by an auxiliary motor 25 , is supported in a slide 26 which can be moved in two sliding guides 27 in a rotating tray 28 of larger diameter. The placement disk 2 acts through the rotating disk 28 through the oval hole 29 . The carousel itself is mounted rotatably in the platform 1 of the device. The rotating disk is driven by an auxiliary motor 31 via a belt 30 . Attached to the rotary disk 28 is a servomotor 32 which deflects the slide 26 via a screw 33 . The steel ball bearings on which the discs are placed and rotated are indicated by small circles. The drive of the rotatable disk is not shown in FIG. 5 for reasons of clarity.

The sliver 34 provided by the supply roller 5 is guided here through two sliver eyelets 35 and 36, one of which is fixed below the supply roller 5 by an arm 37 on the axis 38 of the rotating disc 28, the other The fiber strip eyelet 36 is fixed on the axis 3 of the placement tray 2 by means of an arm 39 . During the slow rotation of the rotary disk 28 , the coils formed by the rapidly rotating placement disk 2 are placed next to each other in the cans 18 which are stationary in this case.

If the axis misalignment 40 between the axis 38 of the rotating disc 28 and the axis 3 of the placement disc 2 is to be adjusted here, then by loading the servo motor 32 through the screw 33 the slide plate 26 and, with this slide plate, the placement disc 2 in the The elliptical hole 29 of the rotating disc moves inwardly or outwardly.

Of course, as not shown, the screw rod 23 or 33 can also be adjusted in the spanner width by an open-end wrench, or by hand through a handwheel, when they are easily accessible.

Preferably, however, a sensor system is provided which includes a light grid 41 consisting of a transmitter 42 and a receiver 43 and a control device 44 . Servomotor 22 or 32 can be acted upon via this control device.

As shown, when the helical spring 46 in the can 18 is too soft, so that the bottom 45 of the can can not be raised to make the fiber strip bundle 47 against the bottom surface of the placement tray 2, then there is this Danger: The fiber sliver 34 to be deposited is thrown beyond the edge of the can 18 . In this case, the fiber sliver to be moved briefly interrupts the light barrier 41 twice per revolution of the depositing disk 2 , but this is not reflected by the control device 44 as a permanent interruption. Accordingly, the control device reduces the axis misalignment, or maintains an adjusted reduction.

The grating is permanently interrupted only when fiber strand bundles 47 are produced in such a way that they rest against the bottom surface of the placement tray 2 . The control device 44 now controls the servomotor 23 or 32 in such a way that it increases the axis offset 24 or 40 to a defined value. A permanent interruption of the light grid 41 occurs when the can bottom 45 rises as defined from the starting point until it rests against the placement tray 2 .

Of course, it is also possible to install sensing devices that have used other sensing measures such as pressure sensors, which detect the top pressure of the fiber strips bundled on the placement tray 2; Bale covered.

list of reference signs

1 platform

2 trays

3 place the disk axis

4 fiber strip channels

5 supply rollers

6 access holes

7 placement holes

8 drive belt for placing discs

9 driving pulley

10 pulley shaft

11 transmission

12 drive motor for transmission

13 shafts for drum drive

14 pulleys for drum drive

15 drive belts for reel drives

16 drums

17 axes of rotation for drums

18 cans

Bearing journals for 19 drums

20 roller skateboards

21 slide rails

22 Servo motor for skateboard

23 screw

24 Misalignment of the axis of the tray/strip tray

25 auxiliary motor

26 skateboard

27 Sliding rails for skateboards

28 rotating discs

29 Oval holes in rotating discs

30 drive belt

31 auxiliary motor

32 servo motor

33 screw

34 fiber strips

35 fiber strip eyelets

36 fiber strip eyelets

Support arm for 37 fiber strip eyelets

38 The axis of rotation of the rotating disc

Support arm for 39 fiber strip eyelets

40 Misalignment of the axis of the placing disc/rotating disc

41 grating for sensing device

42 grating emitters

43 grating receivers

44 Control device for sensing device

45 can bottoms in cans

46 helical springs at the bottom of the barrel

47 fiber bundles

Claims (10)

1. can coiler, it is used at the circular coil of placing the ribbon of weaving of bar tube with staggering, have holding tray and rotating tube rotating, that ribbon is laid with coil, wherein the rotation axis of holding tray and bar tube staggers in parallel to each other, it is characterized in that, can adjust the axial offset (24) of the rotation axis (3,17) of holding tray (2) and bar tube (18) by controlled setting device.

2. can coiler, it is used at the circular coil of placing the ribbon of weaving of static bar tube with staggering, has holding tray rotating, that ribbon is laid with coil, being bearing in to this holding tray off-center itself rotatingly has in the larger-diameter rotating disc, it is characterized in that, can adjust the axial offset (40) of the rotation axis (3,38) of holding tray (2) and rotating disc (28) by controlled setting device.

3. can coiler as claimed in claim 1 or 2 is characterized in that, by a kind of setting device (22,23 of motor driven; 32,33) can automatically adjust the rotation axis (3,17 of holding tray (2) and bar tube (18) or holding tray (2) and rotating disc (28); 3,38) axial offset (24,40).

4. can coiler as claimed in claim 3 is characterized in that, realizes rotation axis (3,17 by a kind of servomotor (22,32); The adjustment of described axial offset (24,40) 3,38).

5. can coiler as claimed in claim 4 is characterized in that, described servomotor is a kind of electrical motor.

6. can coiler as claimed in claim 4 is characterized in that, described servomotor is a kind of fluid power motor.

7. can coiler as claimed in claim 4 has and is installed in rotatable bar tube on the tube dish, it is characterized in that described tube dish (16) can be offset in frame by servomotor (22).

8. can coiler as claimed in claim 4 has and is installed in rotatable bar tube on the tube dish, it is characterized in that described holding tray (2) can be offset in frame by servomotor.

9. can coiler as claimed in claim 4 has the holding tray that is bearing in the rotating rotating disc, it is characterized in that, described holding tray (2) can pass through servomotor (32) and be offset in rotating disc (28).

10. as each described can coiler in the above-mentioned claim, it is characterized in that, realize for rotation axis (3,17 according to sensing device (41,42,43,44); The adjustment of described axial offset 3,38), (45) contact on holding tray (2) bottom surface at the bottom of this sensing device thoughts and feelings ribbon bundle (47) or the bar tube.

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